<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <input type="button" value="参数" id="ip">
  <script src="./cs.js"></script>
  <script>
    var ins = document.getElementById("ip");
    ins.addachEvent("onclick",function () {
      alert(1)
    })
    ins.addachEvent("onclick",function () {
      alert(2)
    })
  </script>
</body>
</html>